The heat of combustion of `CH_(4)`,C(graphite) and `H_(2)(g)` are respectively 20 kcal and -10 kcal. The heat of formation of `CH_(4)` is

The heat of combustion of CH_(4)(g) , C(graphite) and H_(2)(g) are - 20 Kcal, - 40 Kcal and -10 Kcal respectively. The heat of formation of methane is

The heat of combustion of CH_(4)(g) , C (graphite), H_(2)(g) are 20kcal, -40 kcal-10 kcal respectively. The heat of formation of methane is

The molar heats of combustion of C_2H_2(g),C(graphite) and H_2(g) are -310.62, -94.05, -68.32 kcal respectively. The heat of formation of acetylene Is

The heats of combustion for C, H_(2) and CH_(4) are -349, -241.8 and -906.7 kJ respectively. The heat of formation of CH_(4) is

The heat of formations of CO_((g)) and CO_(2(g)) are -26.4 kcal and -94.0 kcal respectively. The heat of combustion of carbon monoxide will be _________ .

The heat of formations of CO_((g)) and CO_(2(g)) are -26.4 kcal and -94.0 kcal respectively. The heat of combustion of carbon monoxide will be _________ .

The heat of formations of CO_((g)) and CO_(2(g)) are -26.4 kcal and -94.0 kcal respectively. The heat of combustion of carbon monoxide will be _________ .